Gaschromatographische Analyse des Samenfettes der mittelamerikanischen Fevillea Cordifolia (Cucurbitaceae)

The fat of the seeds of Fevillea cordifolia was extracted under exclusion of oxygen and light and then characterized by 13C-NMR in regard to the contained unsaturated acid moieties. The total fat was separated by HPLC to yield one major fraction (˜ 45%), one medium fraction (˜ 18%) and some minor fr...

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Main Authors: Achenbach, Hans, Hefter Bübl, Ursula, Waibel, Reiner, Constenla Umaña, Manuel Arturo, Hahn, Horts
Format: Artículo
Language: Alemán
Published: 2023
Subjects:
Fat
Online Access: https://onlinelibrary.wiley.com/doi/abs/10.1002/lipi.19920940804
https://hdl.handle.net/10669/89143
Summary: The fat of the seeds of Fevillea cordifolia was extracted under exclusion of oxygen and light and then characterized by 13C-NMR in regard to the contained unsaturated acid moieties. The total fat was separated by HPLC to yield one major fraction (˜ 45%), one medium fraction (˜ 18%) and some minor fractions. All substantial fractions showed the chromophore of a conjugated triene. According to MS-analysis the major fraction consists of distearyleleostearylglycerol. The total fat was converted by transesterification to a mixture of fatty acids methyl esters, which was analyzed by subsequent HPLC and GC: Main fatty acids were found to be stearic acid (53%) and the triple conjugated α-eleostearic acid (31%). Interestingly, punicic acid, which is isomeric to α-eleostearic acid and contained in various seed fats of Cucurbitaceae plants, could not be detected.